Holds together ca²⁺ and so²⁻₄, used by c atoms to complete their outermost energy level. is the main source of attraction that holds water molecules together.
a. hydrogen bonding
b. increases in strength with larger and larger nonpolar molecules
c. covalent bonding

The correct answer is a. Hydrogen bonding.

Explanation:

The property by which water molecules attract each other is cohesion. groups of water molecules are formed by this interaction by adhesion with other water molecules.

Hydrogen bridges are great forces that hold water molecules together. They form a compact structure that gives it the property of being an almost incompressible liquid. These weak interactions are formed between a hydrogen with a positive partial charge and a more electronegative atom, such as oxygen.

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the ozone layer acts as a filter for the shorter wavelength and highly hazardous ultraviolet radiation (uvr) from the sun, protecting life on earth from its potentially harmful effects. when the sky is clear, there is an inverse relationship between stratospheric ozone and solar uvr measured at the earth's surface.

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explanation:

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